Improved hydraulic dredging-machine



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` Be it lknow'n'that R. S.` ELLIOTT, of the city of St. Louis, in the county of' St. Louis, .and State of Vlic Dredging-Machine; and [Ido hereby declare that ,i tion.

`R.s.'1 :L`L`1`o`TT, or sT'. LoUIsMIssoURI.

Letters PateatNo. 95,213, dated Sqtember 28, 1869.

IMPROVE!) i D REDGING-MACHIN'E.

The Schedule referred t in these Letten: Patent and pxt of the same.

To all whom it may'fconccra':

Missouri, have invented a new and improved Hydrauthe4 following is a full, clear "and exact description thereof, which will enableothers skilled in the art to ,maken and use 'the same, reference .being had to the accompanying drawing, forming part of t is specifica- `Figure' 1 represents an elevation of' onecfcrm of apparatus such as I proposeto use.

' Figure2- represents a'plan view 4of the same. Some parts are shown broken in both figures.

Similar letters of reference indicate corresponding parts. i i v I propose to' employ Water-jets or currents, to be discharged, through a greater or less nnmberof noz-` zles, upon sand or other similar substances at the bottoms of rivers, harbors, 85e., for stirring up and mixing the same with the water, so that it may be floated away; and this I proposeto accomplish by any suitable system of pipesA and. forcing-apparatus, applied to a vessel, ioat, or other article, Vin any manner suitable for the purpose. i

In this example, I have represented a scow, A, having pipes B projecting `from the sides, near one end, to whichthe pipes I), leading to the nozzle-pipe E, are connected, so Ias to swing up or down, for immersing the ,nozzles H, connected tothe pipe E, or to raise them above/the Water.` i

lhe said noezles' are flexibly connected to the pipe A E, to prevent damage from striking the bottom.

The said nozzle-pipe E is also connected to the pipes D, so as to turn freely on its axis, and is provided with an air or cushion-chamber, G.

To the said pipe E, I propose to connect any pre' ferred-number of nozzles, H, for discharging the Water, at intervals, along the space covered bythe pipe; and for forcing the water, I employ any kind of power to force it into the said pipes at I. p v

The nozzles may be adjusted to discharge theiwater at any required angle ii'om the plane of the pipe E, and may he used to urge the vessel-forward while operating on the bar. v When discharging the water in this manner, the

boator vessel should be moved at a moderate'speed over the bar tov be lremoved, by which better results w will be produced than when remaining too long in one position.- v

For elevating or lowering the pipe E, a Windlassl and chain may be employed, as represented at L K; or a ratchetbar and eog-wheel may be employed.

In `actual Work, the boat or vessel with my appaia- Y tus ought to come up to and over the bar against the current, with all 11er jets Working, and drop back over the bar, still having the jets in full operation. In

harbors, the iow of the tide outward will be taken arivantage of;

Having thus described my invention,

What I claim as new, and desire to secure by Letf ters Patent, is-

The arrangement of the pipes B D Evand nozzles H, all substantially as specified. V

R. S. ELLIOTT,

VVitncs'ses:

H. W. HoUGH, JAMES A. BARTLETT. 

